Bison (American Buffalo) can weigh up to 2,000 lbs and can sprint or stampede at speeds around 30 – 40 mph. Bison can also jump 6 feet straight up in the air, over fences. They are wild animals in a domesticated setting at Yellowstone National Park, the only free-roaming herds of bison in the United States. There are about 4,000 American Buffalo at Yellowstone and despite the National Park Service warning visitors not to get too close, people get too tempted to capture that awesome photo and instead end up being gored. Yellowstone bison are also famous for ruling the roads, sometimes hip-checking, kicking or charging cars. With males being 2,000 pounds, there’s not much you can do other than wait them out if the bison are blocking the road. This is referred as the bison (or buffalo) traffic jam. Yellowstone National Park is the only place in the U.S. where bison have lived continuously since prehistoric times. Here’s a look at the bison of Yellowstone, buffalo traffic jams, and bison attacking cars and people. [55 Photos, 7 Videos]

2,000 pounds of anger. The photographer explained, “A bison with its calf. It is staring right at the camera and not too happy about it. She was a lot more upset when the calf hesitated to cross the road because of the traffic.” Yet that doesn’t stop most bison from crossing the road or taking their half out of the middle. They make the rules and buffalo traffic jams as you will see. Photo #1 by Krishna Santhanam